<?php
$myfile = fopen("source.txt", "r") or die("Unable to open file!");
$cont = fgets($myfile);
// $cont = "1\r\n2\r\n3";
$get = '),(a),(b),(c),(d),(e),(f),(g),(),(';
// $res = preg_replace('/\),\(/',"),\r\n(",$get);
$res = preg_replace('/\),\(/',"),\r\n(",$cont);
// file_put_contents("qq1.txt",$cont,FILE_APPEND);
file_put_contents("qq1.txt",$res);
fclose($myfile);